Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / element / handler / impl / StaticTerminals.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/StaticTerminals.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/StaticTerminals.java
new file mode 100644 (file)
index 0000000..e158fad
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/StaticTerminals.java
@@ -0,0 +1,111 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.element.handler.impl;\r
+\r
+import java.awt.Shape;\r
+import java.awt.geom.AffineTransform;\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.HashMap;\r
+import java.util.Map;\r
+\r
+import org.simantics.g2d.diagram.handler.Topology.Terminal;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.TerminalLayout;\r
+import org.simantics.g2d.element.handler.TerminalTopology;\r
+import org.simantics.g2d.utils.geom.DirectionSet;\r
+import org.simantics.utils.datastructures.ValueUtils;\r
+\r
+/**\r
+ * \r
+ * \r
+ * Example:\r
+ * \r
+ *   TerminalHandler th = \r
+ *     StaticTerminals.compile(\r
+ *             topTerminal,    0.0, -10.0, DirectionSet.N,\r
+ *             bottomTerminal, 0.0,  10.0, DirectionSet.S,\r
+ *             leftTerminal,  -10.0,  0.0, DirectionSet.W,\r
+ *          rightTerminal,  20.0,  0.0, DirectionSet.E);\r
+ * \r
+ * @author Toni Kalajainen\r
+ */\r
+public class StaticTerminals implements TerminalLayout, TerminalTopology {\r
+\r
+    private static final long serialVersionUID = -7324592260579191478L;\r
+\r
+    /**\r
+        * Compile terminal handler with static terminals.\r
+        * The xytArray is an varargs array which consists of sequences of\r
+        *  (terminal, x-position, y-position, DirectionSet).\r
+        * \r
+        * @param xytArray an array of (x, y, terminal) triples\r
+        * @return terminal reference\r
+        */\r
+       public static TerminalLayout compile(Object ... xytArray)\r
+       {\r
+               return new StaticTerminals(xytArray);\r
+       }\r
+       \r
+       private class TerminalImpl implements Terminal {\r
+               double x, y;\r
+               DirectionSet ds;\r
+               Terminal t;\r
+       }\r
+       \r
+       Map<Terminal, TerminalImpl> terminalMap = new HashMap<Terminal, TerminalImpl>();\r
+       ArrayList<Terminal> terminals = new ArrayList<Terminal>();\r
+       \r
+       StaticTerminals(Object ... xytArray)\r
+       {\r
+               assert(xytArray.length % 4 == 0);\r
+               for (int i=0; i<xytArray.length/4; i++)\r
+               {\r
+                       TerminalImpl ti = new TerminalImpl();\r
+                       ti.t = (Terminal) xytArray[i*4+0];\r
+                       ti.x = ValueUtils.toDoubleScalar( xytArray[i*4+1] );\r
+                       ti.y = ValueUtils.toDoubleScalar( xytArray[i*4+2] );\r
+                       DirectionSet ds = (DirectionSet) xytArray[i*4+3];\r
+                       ti.ds = ds;\r
+                       terminals.add(ti.t);\r
+                       terminalMap.put(ti.t, ti);\r
+               }\r
+       }       \r
+\r
+       @Override\r
+       public AffineTransform getTerminalPosition(IElement node, Terminal t) {\r
+               TerminalImpl ti = terminalMap.get(t);\r
+               if (ti==null) return null;\r
+               AffineTransform result = new AffineTransform();\r
+               result.setToTranslation(ti.x, ti.y);\r
+               return result;\r
+       }\r
+\r
+       @Override\r
+       public void getTerminals(IElement e, Collection<Terminal> result) {\r
+               result.addAll(terminals);\r
+       }\r
+\r
+       @Override\r
+       public boolean getTerminalDirection(IElement node, Terminal t, DirectionSet directions) {\r
+               TerminalImpl ti = terminalMap.get(t);\r
+               if (ti==null) return false;\r
+               directions.addAll(ti.ds);\r
+               return true;\r
+       }\r
+\r
+       @Override\r
+       public Shape getTerminalShape(IElement node, Terminal t) {\r
+               return null;\r
+       }\r
+       \r
+}\r